Okur-Chung neurodevelopmental syndrome (OCNDS) is characterized by delayed psychomotor development, intellectual disability with poor speech, behavioral abnormalities, cortical malformations in some patients, and variable dysmorphic facial features. Additional features, including microcephaly, gastrointestinal problems, and low levels of immunoglobulins, may be observed in some patients (Okur et al., 2016).

Reference
OMIM: Okur-chung neurodevelopmental syndrome